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mac80211: assume 2-byte aligning for 802.11 packets, slightly improves code size and performance

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SVN-Revision: 34910
v19.07.3_mercusys_ac12_duma
Felix Fietkau 12 years ago
parent 41a039f464
commit 29d737a976
2 changed files with 449 additions and 0 deletions
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378
package/mac80211/patches/300-pending_work.patch
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@ -28,6 +28,33 @@
if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -173,7 +173,7 @@ struct ieee80211_chanctx_conf {
u8 rx_chains_static, rx_chains_dynamic;
- u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *))));
+ u8 drv_priv[0] __aligned(sizeof(void *));
};
/**
@@ -1059,7 +1059,7 @@ struct ieee80211_vif {
u32 driver_flags;
/* must be last */
- u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *))));
+ u8 drv_priv[0] __aligned(sizeof(void *));
};
static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif)
@@ -1209,7 +1209,7 @@ struct ieee80211_sta {
u8 max_sp;
/* must be last */
- u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *))));
+ u8 drv_priv[0] __aligned(sizeof(void *));
};
/**
@@ -1369,6 +1369,10 @@ struct ieee80211_tx_control {
* @IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF: Use the P2P Device address for any
* P2P Interface. This will be honoured even if more than one interface
@ -826,3 +853,354 @@
void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
struct ieee80211_chanctx *chanctx);
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -180,7 +180,7 @@ struct ieee80211_hdr {
u8 addr3[6];
__le16 seq_ctrl;
u8 addr4[6];
-} __attribute__ ((packed));
+} __packed;
struct ieee80211_hdr_3addr {
__le16 frame_control;
@@ -189,7 +189,7 @@ struct ieee80211_hdr_3addr {
u8 addr2[6];
u8 addr3[6];
__le16 seq_ctrl;
-} __attribute__ ((packed));
+} __packed;
struct ieee80211_qos_hdr {
__le16 frame_control;
@@ -199,7 +199,7 @@ struct ieee80211_qos_hdr {
u8 addr3[6];
__le16 seq_ctrl;
__le16 qos_ctrl;
-} __attribute__ ((packed));
+} __packed;
/**
* ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
@@ -576,7 +576,7 @@ struct ieee80211s_hdr {
__le32 seqnum;
u8 eaddr1[6];
u8 eaddr2[6];
-} __attribute__ ((packed));
+} __packed;
/* Mesh flags */
#define MESH_FLAGS_AE_A4 0x1
@@ -614,7 +614,7 @@ struct ieee80211_quiet_ie {
u8 period;
__le16 duration;
__le16 offset;
-} __attribute__ ((packed));
+} __packed;
/**
* struct ieee80211_msrment_ie
@@ -626,7 +626,7 @@ struct ieee80211_msrment_ie {
u8 mode;
u8 type;
u8 request[0];
-} __attribute__ ((packed));
+} __packed;
/**
* struct ieee80211_channel_sw_ie
@@ -637,7 +637,7 @@ struct ieee80211_channel_sw_ie {
u8 mode;
u8 new_ch_num;
u8 count;
-} __attribute__ ((packed));
+} __packed;
/**
* struct ieee80211_tim
@@ -650,7 +650,7 @@ struct ieee80211_tim_ie {
u8 bitmap_ctrl;
/* variable size: 1 - 251 bytes */
u8 virtual_map[1];
-} __attribute__ ((packed));
+} __packed;
/**
* struct ieee80211_meshconf_ie
@@ -665,7 +665,7 @@ struct ieee80211_meshconf_ie {
u8 meshconf_auth;
u8 meshconf_form;
u8 meshconf_cap;
-} __attribute__ ((packed));
+} __packed;
/**
* enum mesh_config_capab_flags - Mesh Configuration IE capability field flags
@@ -695,7 +695,7 @@ struct ieee80211_rann_ie {
__le32 rann_seq;
__le32 rann_interval;
__le32 rann_metric;
-} __attribute__ ((packed));
+} __packed;
enum ieee80211_rann_flags {
RANN_FLAG_IS_GATE = 1 << 0,
@@ -717,33 +717,33 @@ struct ieee80211_mgmt {
__le16 status_code;
/* possibly followed by Challenge text */
u8 variable[0];
- } __attribute__ ((packed)) auth;
+ } __packed auth;
struct {
__le16 reason_code;
- } __attribute__ ((packed)) deauth;
+ } __packed deauth;
struct {
__le16 capab_info;
__le16 listen_interval;
/* followed by SSID and Supported rates */
u8 variable[0];
- } __attribute__ ((packed)) assoc_req;
+ } __packed assoc_req;
struct {
__le16 capab_info;
__le16 status_code;
__le16 aid;
/* followed by Supported rates */
u8 variable[0];
- } __attribute__ ((packed)) assoc_resp, reassoc_resp;
+ } __packed assoc_resp, reassoc_resp;
struct {
__le16 capab_info;
__le16 listen_interval;
u8 current_ap[6];
/* followed by SSID and Supported rates */
u8 variable[0];
- } __attribute__ ((packed)) reassoc_req;
+ } __packed reassoc_req;
struct {
__le16 reason_code;
- } __attribute__ ((packed)) disassoc;
+ } __packed disassoc;
struct {
__le64 timestamp;
__le16 beacon_int;
@@ -751,11 +751,11 @@ struct ieee80211_mgmt {
/* followed by some of SSID, Supported rates,
* FH Params, DS Params, CF Params, IBSS Params, TIM */
u8 variable[0];
- } __attribute__ ((packed)) beacon;
+ } __packed beacon;
struct {
/* only variable items: SSID, Supported rates */
u8 variable[0];
- } __attribute__ ((packed)) probe_req;
+ } __packed probe_req;
struct {
__le64 timestamp;
__le16 beacon_int;
@@ -763,7 +763,7 @@ struct ieee80211_mgmt {
/* followed by some of SSID, Supported rates,
* FH Params, DS Params, CF Params, IBSS Params */
u8 variable[0];
- } __attribute__ ((packed)) probe_resp;
+ } __packed probe_resp;
struct {
u8 category;
union {
@@ -772,55 +772,55 @@ struct ieee80211_mgmt {
u8 dialog_token;
u8 status_code;
u8 variable[0];
- } __attribute__ ((packed)) wme_action;
+ } __packed wme_action;
struct{
u8 action_code;
u8 element_id;
u8 length;
struct ieee80211_channel_sw_ie sw_elem;
- } __attribute__((packed)) chan_switch;
+ } __packed chan_switch;
struct{
u8 action_code;
u8 dialog_token;
u8 element_id;
u8 length;
struct ieee80211_msrment_ie msr_elem;
- } __attribute__((packed)) measurement;
+ } __packed measurement;
struct{
u8 action_code;
u8 dialog_token;
__le16 capab;
__le16 timeout;
__le16 start_seq_num;
- } __attribute__((packed)) addba_req;
+ } __packed addba_req;
struct{
u8 action_code;
u8 dialog_token;
__le16 status;
__le16 capab;
__le16 timeout;
- } __attribute__((packed)) addba_resp;
+ } __packed addba_resp;
struct{
u8 action_code;
__le16 params;
__le16 reason_code;
- } __attribute__((packed)) delba;
+ } __packed delba;
struct {
u8 action_code;
u8 variable[0];
- } __attribute__((packed)) self_prot;
+ } __packed self_prot;
struct{
u8 action_code;
u8 variable[0];
- } __attribute__((packed)) mesh_action;
+ } __packed mesh_action;
struct {
u8 action;
u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
- } __attribute__ ((packed)) sa_query;
+ } __packed sa_query;
struct {
u8 action;
u8 smps_control;
- } __attribute__ ((packed)) ht_smps;
+ } __packed ht_smps;
struct {
u8 action_code;
u8 dialog_token;
@@ -828,9 +828,9 @@ struct ieee80211_mgmt {
u8 variable[0];
} __packed tdls_discover_resp;
} u;
- } __attribute__ ((packed)) action;
+ } __packed action;
} u;
-} __attribute__ ((packed));
+} __packed;
/* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
#define BSS_MEMBERSHIP_SELECTOR_HT_PHY 127
@@ -846,7 +846,7 @@ struct ieee80211_mmie {
__le16 key_id;
u8 sequence_number[6];
u8 mic[8];
-} __attribute__ ((packed));
+} __packed;
struct ieee80211_vendor_ie {
u8 element_id;
@@ -861,20 +861,20 @@ struct ieee80211_rts {
__le16 duration;
u8 ra[6];
u8 ta[6];
-} __attribute__ ((packed));
+} __packed;
struct ieee80211_cts {
__le16 frame_control;
__le16 duration;
u8 ra[6];
-} __attribute__ ((packed));
+} __packed;
struct ieee80211_pspoll {
__le16 frame_control;
__le16 aid;
u8 bssid[6];
u8 ta[6];
-} __attribute__ ((packed));
+} __packed;
/* TDLS */
@@ -967,7 +967,7 @@ struct ieee80211_bar {
__u8 ta[6];
__le16 control;
__le16 start_seq_num;
-} __attribute__((packed));
+} __packed;
/* 802.11 BAR control masks */
#define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000
@@ -992,7 +992,7 @@ struct ieee80211_mcs_info {
__le16 rx_highest;
u8 tx_params;
u8 reserved[3];
-} __attribute__((packed));
+} __packed;
/* 802.11n HT capability MSC set */
#define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff
@@ -1031,7 +1031,7 @@ struct ieee80211_ht_cap {
__le16 extended_ht_cap_info;
__le32 tx_BF_cap_info;
u8 antenna_selection_info;
-} __attribute__ ((packed));
+} __packed;
/* 802.11n HT capabilities masks (for cap_info) */
#define IEEE80211_HT_CAP_LDPC_CODING 0x0001
@@ -1102,7 +1102,7 @@ struct ieee80211_ht_operation {
__le16 operation_mode;
__le16 stbc_param;
u8 basic_set[16];
-} __attribute__ ((packed));
+} __packed;
/* for ht_param */
#define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03
@@ -1832,14 +1832,14 @@ struct ieee80211_country_ie_triplet {
u8 first_channel;
u8 num_channels;
s8 max_power;
- } __attribute__ ((packed)) chans;
+ } __packed chans;
struct {
u8 reg_extension_id;
u8 reg_class;
u8 coverage_class;
- } __attribute__ ((packed)) ext;
+ } __packed ext;
};
-} __attribute__ ((packed));
+} __packed;
enum ieee80211_timeout_interval_type {
WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1256,7 +1256,7 @@ struct cfg80211_bss {
u8 bssid[ETH_ALEN];
- u8 priv[0] __attribute__((__aligned__(sizeof(void *))));
+ u8 priv[0] __aligned(sizeof(void *));
};
/**
@@ -2395,7 +2395,7 @@ struct wiphy {
const struct iw_handler_def *wext;
#endif
- char priv[0] __attribute__((__aligned__(NETDEV_ALIGN)));
+ char priv[0] __aligned(NETDEV_ALIGN);
};
static inline struct net *wiphy_net(struct wiphy *wiphy)
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -86,7 +86,7 @@ struct cfg80211_registered_device {
/* must be last because of the way we do wiphy_priv(),
* and it should at least be aligned to NETDEV_ALIGN */
- struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN)));
+ struct wiphy wiphy __aligned(NETDEV_ALIGN);
};
static inline

71
package/mac80211/patches/542-mac80211_optimize_wireless_struct.patch
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@ -0,0 +1,71 @@
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -180,7 +180,7 @@ struct ieee80211_hdr {
u8 addr3[6];
__le16 seq_ctrl;
u8 addr4[6];
-} __packed;
+} __packed __aligned(2);
struct ieee80211_hdr_3addr {
__le16 frame_control;
@@ -189,7 +189,7 @@ struct ieee80211_hdr_3addr {
u8 addr2[6];
u8 addr3[6];
__le16 seq_ctrl;
-} __packed;
+} __packed __aligned(2);
struct ieee80211_qos_hdr {
__le16 frame_control;
@@ -199,7 +199,7 @@ struct ieee80211_qos_hdr {
u8 addr3[6];
__le16 seq_ctrl;
__le16 qos_ctrl;
-} __packed;
+} __packed __aligned(2);
/**
* ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
@@ -576,7 +576,7 @@ struct ieee80211s_hdr {
__le32 seqnum;
u8 eaddr1[6];
u8 eaddr2[6];
-} __packed;
+} __packed __aligned(2);
/* Mesh flags */
#define MESH_FLAGS_AE_A4 0x1
@@ -830,7 +830,7 @@ struct ieee80211_mgmt {
} u;
} __packed action;
} u;
-} __packed;
+} __packed __aligned(2);
/* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
#define BSS_MEMBERSHIP_SELECTOR_HT_PHY 127
@@ -861,20 +861,20 @@ struct ieee80211_rts {
__le16 duration;
u8 ra[6];
u8 ta[6];
-} __packed;
+} __packed __aligned(2);
struct ieee80211_cts {
__le16 frame_control;
__le16 duration;
u8 ra[6];
-} __packed;
+} __packed __aligned(2);
struct ieee80211_pspoll {
__le16 frame_control;
__le16 aid;
u8 bssid[6];
u8 ta[6];
-} __packed;
+} __packed __aligned(2);
/* TDLS */
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